WO2003018702A1 - Oberflächenschutzfolie für lackierte flächen mit einem kleber auf basis von hydrierten blockcopolymeren - Google Patents
Oberflächenschutzfolie für lackierte flächen mit einem kleber auf basis von hydrierten blockcopolymeren Download PDFInfo
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- WO2003018702A1 WO2003018702A1 PCT/EP2002/008438 EP0208438W WO03018702A1 WO 2003018702 A1 WO2003018702 A1 WO 2003018702A1 EP 0208438 W EP0208438 W EP 0208438W WO 03018702 A1 WO03018702 A1 WO 03018702A1
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- Prior art keywords
- adhesive
- protective film
- self
- parts
- film according
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J153/02—Vinyl aromatic monomers and conjugated dienes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
- B32B7/04—Interconnection of layers
- B32B7/10—Interconnection of layers at least one layer having inter-reactive properties
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- C—CHEMISTRY; METALLURGY
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- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
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- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/16—Elastomeric ethene-propene or ethene-propene-diene copolymers, e.g. EPR and EPDM rubbers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
- C09J123/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C09J123/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C09J123/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefines
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J153/00—Adhesives based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J153/02—Vinyl aromatic monomers and conjugated dienes
- C09J153/025—Vinyl aromatic monomers and conjugated dienes modified
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
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- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
- C09J7/38—Pressure-sensitive adhesives [PSA]
- C09J7/381—Pressure-sensitive adhesives [PSA] based on macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
- C09J7/387—Block-copolymers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
- C08L2666/24—Graft or block copolymers according to groups C08L51/00, C08L53/00 or C08L55/02; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
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- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
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- C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2423/00—Presence of polyolefin
- C09J2423/006—Presence of polyolefin in the substrate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2453/00—Presence of block copolymer
Definitions
- the invention relates to a self-adhesive protective film for protecting surfaces such as glass, ceramics, VA steel, polycarbonate or acrylic glass, in particular painted surfaces.
- the conventional method of preserving automobiles is to apply paraffin waxes with a thickness of 5 to 20 ⁇ m.
- paraffin waxes with a thickness of 5 to 20 ⁇ m.
- a significant disadvantage of paraffin wax sealing is the necessary de-preservation using a steam jet, surfactants or solvents.
- the environmentally friendly recovery and disposal of the residues cause a lot of equipment and very high costs.
- a current development in the field of automobile transport protection is the use of hoods which cover the entire vehicle and are shrunk on by the action of heat.
- hood solutions are very expensive and require great effort when putting on the hood, shrinking on and especially when getting into the masked car.
- Zipper openings are specially provided for this, which have to be opened and closed again in a time-consuming manner. Visibility when maneuvering is severely impaired, and matting occurs in places due to trapped dirt and unavoidable rubbing on the paint. So far, this solution has not been successful.
- polyolefins or mixtures of those which are usually mixed with light stabilizers and titanium dioxide are generally used as film materials for covering vehicle paints.
- Self-adhesive compositions based on natural rubber have a relatively good initial adhesion and can be removed again without leaving any residue. However, even with brief exposure to UV radiation, these materials are not stable to aging. This leads to strong greasy or varnish-like residues on the varnish after a few months of normal weather conditions.
- a protective film with a self-adhesive composition based on acrylate is mentioned in US Pat. No. 5,612,136 A1.
- Polyacrylate compositions are very UV stable, but if uncrosslinked polyacrylate compositions are subjected to alternating climate storage, they only partially show good compatibility with lacquer surfaces.
- the polyacrylate compositions have an undesirably strong pull-up behavior, ie removing the film after a while is very time-consuming. If these materials are chemically or strongly cross-linked by radiation, they are easier to remove, but on the other hand they cause clearly visible, permanent deformations of the paint surface.
- the adhesive film with polyethylene vinyl acetate adhesive (EVAc) described in DE 195 32 220 A1 has significantly better adhesion properties than the two systems described above.
- Self-adhesive compositions based on polyisobutylene can be removed much more easily after storage, but after alternating climate storage on paints commonly used in the automotive industry, they sometimes show such a low adhesive strength that they can withstand jerky loads, such as those caused by fluttering in the wind that do not always achieve the required bond strength in practice.
- the adhesive strength is often reduced in such a way that the film separates from the protected vehicles during transport, so that on the one hand there is no longer a protective effect and on the other hand there is a safety risk if the following vehicles blow onto the windscreen.
- this self-adhesive has no compatibility with the sealing profiles common in automotive engineering or the plasticizers contained therein:
- Adhesive articles of this type are described in EP 0 519 278 A1, JP 95-325285 A and US 5,601, 917 A1.
- EP 0 519 278 A1 describes such a film for protecting automobiles, which consists of a carrier which is coated with a rubber-based pressure-sensitive adhesive, in particular polyisobutylene, and which has a dynamic modulus of elasticity of 2 ⁇ 10 5 to 7 ⁇ 10 6 dynes / cm 2 , this corresponds in SI units to a value of 2 x 10 4 to 70 x 10 4 Pa, at 60 ° C, is coated.
- the adhesive described in DE 197 42 805 A1 is based on a copolymer that consists of at least two different olefins with 2 to 12 carbon atoms and a diene.
- Ethylene-propylene-diene terpolymers EPDM
- Non-polar ethylene-propylene-diene polymers are characterized by good weather and UV stability, making them ideal as an adhesive for surface protection films.
- the terpolymers described in the patent have a Mooney viscosity ML (1 +4) 125 ° C less than 50.
- Example 1 in DE 197 42 805 A1 describes a self-adhesive protective film with an adhesive consisting of an EPDM with a Mooney viscosity ML (1 + 4) 125 ° C. of 28 and a light stabilizer. With this protective film, a sufficiently high adhesive strength is obtained on a PU lacquer surface of 0.4 N / cm.
- the vehicles are unmasked with a higher pull-off speed of at least 15 to 30 m / min, so that measuring the adhesive forces according to AFERA 4001 or DIN EN 1939 is not relevant in practice.
- An assessment of the suitability of a self-adhesive protective film using these measurement methods is not possible.
- the adhesive is now relatively hard due to the crosslinking, which leads to considerable deformation of the paint surface and to an insufficient initial adhesive strength of 0.2 N / cm.
- Another example is an adhesive based on poly- ⁇ -olefins (DE 197 30 193 A1). With this surface protection film, a considerable discrepancy between the adhesive forces at lower and higher peel speeds is also observed.
- Analogous to DE 197 42 805 A1 only polymers with a Mooney viscosity ML (1 + 4) 125 ° C. below 50 are used in the examples. As a result of the low cohesion, strong build-up and mass residues are also observed on the paint surface. The pulling forces are above 3.2 N / cm.
- WO 96/37568 A1 describes the use of polyhexene or polyctene for a non-polar pressure sensitive adhesive. Because of the low cohesion, the polymers described in the examples have a low absorption, but due to the low molecular weight of such commercially available polymers, these polymers also lead to residues which are added by adding other polymers, termed “cold flow restricting agent” there In practice, the adhesives mentioned are still too little cohesive, which leads to residues after weathering, especially if the adhesive tape shrinks due to the action of heat.
- Adhesives made of hydrogenated styrene-diene block copolymers, as described in JP 08 027 444 A1, are significantly more UV-stable than polyisobutylenes.
- the high cohesion of these adhesives is advantageous, particularly at moderate temperatures, which is caused by the formation of the domain.
- a major disadvantage of such block copolymers is the hardness of these adhesives, which is so high due to the styrene domains. Due to the great hardness, this type of adhesive can cause severe deformations and changes in the paint, especially after long storage.
- the object of the following invention is to utilize the advantages of the adhesive system based on the styrene block copolymers, namely good initial adhesion, great security against sticking, and little application, and to find a way to significantly reduce the essential disadvantage of the strong paint deformations without impairing the strengths to provide a surface protection film, especially for the transport protection of brand new automobiles.
- a self-adhesive protective film with a single-layer or multi-layer, in particular polyolefinic carrier layer and a self-adhesive layer shows the properties which it requires for surface protection applications on painted surfaces.
- the self-adhesive of the protective film is structured as follows:
- Polyethylene-propylene copolymers polyisobutylene and polybutylene and has a softening temperature of below 25 ° C
- Suitable elastomers are those based on block copolymers containing polymer blocks formed from vinyl aromatics (A-B blocks), preferably styrene, and those formed by Polymerization of 1,3-dienes (B blocks), preferably butadiene and isoprene or, for UV-stable adhesives, particularly preferably their hydrogenation products, for use. Both homo- and copolymer blocks can be used according to the invention. Resulting block copolymers may contain the same or different B blocks.
- Block copolymers can have a linear ABA structure, block copolymers of radial shape and star-shaped and linear multiblock copolymers can also be used. AB two-block copolymers can be present as further components.
- Block copolymers of vinyl aromatics and isobutylene can also be used according to the invention. All of the aforementioned polymers can be used alone or as a mixture with one another.
- polystyrene blocks instead of the polystyrene blocks, polymer blocks based on other flavor-containing homo- and copolymers (preferably C-8 to C-12 aromatics) with glass transition temperatures of> approx. 75 ° C., such as, for example, ⁇ -methylstyrene-containing aromatic blocks, can be used.
- other flavor-containing homo- and copolymers preferably C-8 to C-12 aromatics
- glass transition temperatures of> approx. 75 ° C. such as, for example, ⁇ -methylstyrene-containing aromatic blocks
- block copolymers and their hydrogenation products can also be used according to the invention, which use further polydiene-containing elastomer blocks, such as copolymers of several different 1,3-dienes.
- Functionalized block copolymers such as, for example, maleic anhydride-modified or silane-modified styrene block copolymers, can also be used according to the invention.
- the elastomers are predominantly hydrogenated in the middle block, but in particular completely hydrogenated in the middle block.
- primary antioxidants such as, for example, sterically hindered phenols
- secondary antioxidants such as, for example, phosphites or thioethers
- process stabilizers such as, for example, C radical scavengers
- light stabilizers such as, for example, UV absorbers, sterically hindered amines
- Processing aids as well optionally further polymers of preferably elastomeric nature.
- elastomers include those based on pure hydrocarbons, for example saturated ethylene-propylene copolymers, ethylene-propylene rubber.
- the adhesives according to the invention based on hydrogenated styrene block copolymers are set to be significantly softer than the known adhesives, but still have sufficient cohesion.
- the styrene block copolymers are not inherently pressure-sensitive, they must be made pressure-sensitive by adding adhesive resins.
- hydrogenated adhesive resins are usually used as the main component because of the UV resistance required especially for automotive coatings. Preferred are u. a.
- Hydrogenated polymers of preferably C-8 and C-9 aromatics for example Regalite and Regalrez series; Hercules Inc. // Arkon P series; Arakawa
- C-8 and C-9 aromatics for example Regalite and Regalrez series; Hercules Inc. // Arkon P series; Arakawa
- Partially hydrogenated polymers of C-8 and C-9 aromatics for example Regalite and Regalrez series; Hercules Inc. // Arkon M; Arakawa
- Hydrogenated polyterpene resins for example Clearon M; Yasuhara
- Aromatic-modified selectively hydrogenated dicyclopentadiene derivatives for example Escorez 5600 series; Exxon Chemicals
- Escorez 5600 series for example Escorez 5600 series; Exxon Chemicals
- Hydrogenated hydrocarbon resins are mainly used for use as a surface protection film that is exposed to UV radiation.
- non-hydrogenated adhesive resins can also be used alone or as blending components of the hydrogenated adhesive resins.
- plasticizers in the traditional sense, such as mineral oils, not only result in a lower hardness of the adhesives, but also reduce the cohesion of the adhesives, so that unmasking is often difficult because residues of adhesive remain.
- the use of plasticizing oils is particularly critical on painted surfaces, as these can migrate into the paint and thus lead to deformation.
- plasticizing polymers such as liquid ethylene-propylene copolymers (EPM or EPDM) or polyisobutylenes with a molecular weight M w of less than 150,000 g / mol.
- Adhesives according to the invention are based on styrene block copolymers which, in addition to an adhesive resin, contain liquid polymers as plasticizers.
- the adhesives can be set much softer than conventional adhesives based on styrene block copolymers, but the high cohesion is retained.
- plasticizing oils the plasticizing polymers described tend to be less likely to migrate into the paint. Softening oils often swell the paint, which leads to deformation of the paint, which is undesirable. The polymer plasticizers are severely hindered in their migration and also tend to swell less of the paint.
- plasticizing polymers as a blending component of styrene block copolymers and adhesive resins reduces the adhesive force, as is the case with the use of plasticizing oils, which is particularly advantageous for surface protection films.
- Liquid ethylene-propylene copolymers (EPDM) (Trilene, Uniroyal Chemicals), polybutenes and polyisobutylenes with a molecular weight Mw of less than 150,000 (Oppanol B 10, BASF // Vistanex LMMS, Exxon // Tetrax, Nippon Petro Chemicals) with a softening point below 25 ° C.
- plasticizing polymers described above all have a low solubility parameter and are therefore much more compatible with the elastomeric center blocks of the styrene block copolymers than with the hard styrene blocks.
- Plasticizers which can also migrate into the styrene domains, lead to a significant reduction in cohesion, since the styrene domains are softened, so use at higher temperatures is no longer possible.
- Adhesives according to the invention contain 30 to 180 parts of resin based on 100 parts of the elastomer.
- the proportion of polymeric plasticizer is between 20 and 170 parts, the sum of the resins and the polymeric plasticizer not exceeding 200 parts based on the amount of elastomer.
- a particular advantage of the systems made of styrene block copolymer (s) and polymeric plasticizers is the very low level of adhesion to the substrate.
- the bond strength after half an hour and after storage at 90 ° C for 3 days differs very little.
- transportation can begin shortly after application without fear of the protective film being peeled off by the wind.
- the adhesive strength has not increased significantly after a long storage period, which enables easy unmasking.
- the cohesion of the adhesives is so high that even after storage at high temperatures (90 ° C, see examples below) there are no residual masses on the paint after unmasking.
- the protective film can be removed from lacquered surfaces after storage in alternating climates without residue at peel speeds of 20 m / min with an adhesive force of 2.3 to 3.6 N / cm. Furthermore, a residue-free removal of the protective film after alternating climate storage is possible up to a temperature of at least 50 ° C.
- the adhesive force on steel is preferably 0.1 and 2 N / cm, in particular between 0.3 and 1 N / cm.
- compositions described can be applied to a carrier film from solution or can be produced simulaneously with the carrier layer and white auxiliary layers by coextrusion.
- the carrier layer of the adhesive is preferably a thermoplastic polyolefin film which is undrawn and at least one polyolefin from the group of polyethylenes (for example HDPE, LDPE, MDPE, LLDPE, VLLDPE, copolymers of ethylene with polar comonomers) and the group of polypropylenes (for example polypropylene Homopolymers, polypropylene random copolymers or polypropylene block copolymers) contains.
- polyethylenes for example HDPE, LDPE, MDPE, LLDPE, VLLDPE, copolymers of ethylene with polar comonomers
- polypropylenes for example polypropylene Homopolymers, polypropylene random copolymers or polypropylene block copolymers
- Mixtures of various suitable polyolefins are preferably used in order to be able to optimally adjust the mechanical and thermal properties as well as gloss, extrusion behavior, anchoring of the adhesive, etc.
- thermoplastic polyolefin film which is undrawn and contains at least one polypropylene block copolymer is particularly suitable as the backing layer.
- the content of polypropylene block copolymer makes up 10 to 95% (w / w) of the protective film.
- Films of this type can be produced on blowing systems or preferably cast systems (T-die technology), the film not being mono- or biaxially stretched by stretching (stretching) with stretching rollers or stretching frames.
- stretching stretching
- stretching frames stretching rollers or stretching frames.
- polypropylene block copolymers used are in the literature in Encycl. Polym. Be. Technol. 13, 479ff (1988) and in Ullmann's Encyclopedia of Industrial Chemistry A21, 529ff (1992).
- trade names are Propathene GSF 113 (ICI), 411 GA 05 (Amoco), PMA 6100 (Montell), Stamylan P (DSM), BD 801 F (Borealis), Daplen FFC1012 (PC), Novqlen 2309 L.
- the melt index influences the strength of the film and the flowability of the melt in opposite directions.
- a melt index of 0.8 to 15 g / 10 min (ISO 1133 (A / 4) at 230 ° C. and 2.16 kg) is favorable for the production of the protective film according to the invention in order to meet the requirements for toughness and tear strength on the one hand and processability ( To achieve production speed and uniformity of the thickness with coextruded films) on the other hand.
- the preferred range is 4 to 10 g / 10 min.
- coextrusion is a suitable means of introducing the adhesion promoter layer in the production of the film.
- the comonomer content in polypropylene block copolymers determines the softness, impact strength and the heat resistance of the protective film produced therefrom.
- the protective film according to the invention preferably contains a polypropylene block copolymer with 3 to 15% (w / w) ethylene as comonomer.
- the impact strength according to DIN 53448 should be at least 1000 mJ / mm 2 lengthways and crossways.
- polyethylene such as HDPE, LDPE, MDPE, LLDPE, VLLDPE
- copolymers of ethylene or propylene with polar comonomers such as polypropylene homopolymers or polypropylene random copolymers for fine-tuning the properties (mechanical, thermal or others Properties such as gloss, adhesion of the adhesive, extrusion behavior, etc.)
- properties mechanical, thermal or others Properties such as gloss, adhesion of the adhesive, extrusion behavior, etc.
- the combination of several polypropylenes, in particular different softness and different melt indices, such as soft block copolymer with PP homopolymer or a hard block copolymer type, is particularly advantageous since toughness, heat resistance and flow behavior can be better adapted to the requirements than when using a block copolymer alone.
- the proportion of propylene in a film layer should be at least 65% (w / w). In the case of a multilayer structure of the film layer, this is the layer that is responsible for the strength and therefore contains the highest proportion of polypropylene (usually also has the highest thickness) and not a possible adhesion promoter layer.
- the film can consist of a mixture of 40 parts by weight to 70 parts by weight of polyethylene, 20 parts by weight to 40 parts by weight of polypropylene, 8 parts by weight to 15 parts by weight of titanium dioxide, , 3 parts by weight to 0.7 parts by weight of light stabilizers.
- the carrier films are preferably including an adhesion promoter layer which is arranged between the carrier layer and the adhesive layer.
- the softness of the carrier film plays a role in the deformability during application of the protective film, the force at 10% elongation should not exceed 25 N / 15 mm, preferably 16 N / 15 mm, in both the longitudinal and transverse directions (tensile test according to DIN EN ISO 527-7-5).
- the carrier films should therefore not be stretched. By stretching, the force increases so much at 10% elongation that the conformability is no longer given.
- the addition of light stabilizers is preferred. Their primary function is to avoid embrittlement of the carrier film.
- Such light stabilizers are from Gaechter and Müller, Taschenbuch der Kunststoff-Additive, Kunststoff 1979, from Kirk-Othmer (3.) 23, 615 - 627, from Encycl. Polym. Be. Technol. 14, 125-148 and in Ulimann (4.) 8, 21; 15, 529, 676.
- HALS light stabilizers in particular are suitable for the protective film according to the invention.
- the amount of light stabilizer should be at least 0.15% by weight, preferably at least 0.30% by weight, based on the carrier film.
- antioxidants for the film for example Irganox 1010 or tris-nonylphenyl phosphite
- UV absorbers, light stabilizers and anti-aging agents are listed in EP 0 763 584 A1.
- the UV permeability of the protective film is in the range from 290 to 360 nm due to the interaction of light stabilizers and pigments below approximately 1%, preferably below approximately 0.1%.
- the protective films produced in this way have good adhesive strength on various paints customary in the automotive industry, so that the protective film does not move away even under the influence of wind or under tension due to gluing on curved surfaces Vehicle replaces.
- the self-adhesive shows sufficient adhesive strength, especially within the first few minutes after application, so that the protective film can be exposed, for example, to a strong wind load (up to 160 km / h) after half an hour.
- the protective film according to the invention is therefore particularly suitable for protecting the fresh finishing lacquer of automobiles from assembly or transport or as processing and transport protection for freshly painted surfaces.
- the protective film can be bonded without any disadvantages occurring half an hour after the painted surfaces have passed through the oven, although at this point the paint has not yet fully hardened.
- the protective film according to the invention is distinguished by the fact that it can be applied to automobiles in a large width above the bonnet, roof and trunk, and because of its deformability, it can be planned and even adapts very well to slightly curved shaped surfaces. This enables protection of the horizontal surfaces most at risk from pollution. But also narrow areas such as the door projection under the windows, the entry area or bumpers can be covered easily. The protection of the vertical surfaces on the vehicle is particularly useful during assembly.
- the protective film is resistant to sunlight, heat and cold, whereby the weather stability is at least half a year. Even the highest levels of solar radiation, such as occur in Florida, do not lead to the failure or detachment of the protective foils.
- the extremely low UV permeability of the protective film supports the adhesive's resistance to the effects of the sun.
- the strength of the protective film compared to the preservation with wax ensures perfect protection against dirt such as bird droppings and damage to the entire vehicle due to slight mechanical effects.
- the material or energy recovery of the protective film is possible, especially because it is halogen-free.
- the protective films according to the invention are suitable due to their high level of adhesion, but nevertheless easy to remove after long storage, for protecting the fresh top coat of vehicles such as automobiles and for protecting freshly painted vehicle parts against dirt and damage during assembly, transport and storage.
- the films according to the invention can also be used excellently for protecting surfaces such as glass, ceramic, VA steel, polycarbonate or acrylic glass, in particular for protecting painted surfaces.
- All sample films were produced by coating a corona-pretreated polyolefin carrier with the toluene solutions of the individual adhesive formulations.
- the carrier was 60 ⁇ m thick and was composed as follows:
- the layer thickness of the pressure-sensitive adhesive applied was 15 ⁇ m after drying, so that the samples had a total thickness of 85 ⁇ m.
- Table 1 above lists sample formulations according to the claims and counterexamples.
- the samples were glued in strips to 1 K-PU-coated (Duraclear II, BASF) sample sheets.
- the samples were assessed according to the following criteria:
- the adhesive forces were determined at a peel angle of 180 ° according to AFERA 4001. Steel plates and test sheets coated with the PU varnish were used as the test surface. In a modified adhesive strength test, the 15 mm wide test strips were run at a speed of 20 m / min at a 180 ° angle, at a temperature of 23 ° C + 1 ° C and a relative air humidity of 50% + 5% from one with PU Paint stripped painted sheet.
- the application-technical judgment about the changes in the automotive paint makes a recommendation as to whether the film satisfies the application-technical requirements for good paint compatibility.
- Table 1 Pull-off forces of paint according to different storage conditions.
- Examples 7 and 8 show a similar adhesive strength profile to the other examples, but show increased varnish changes due to the greater hardness or the migration of the oil, so that the application test was negative.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Adhesive Tapes (AREA)
- Laminated Bodies (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP02762412A EP1425359B1 (de) | 2001-08-23 | 2002-07-30 | Oberflächenschutzfolie für lackierte flächen mit einem kleber auf basis von hydrierten blockcopolymeren |
US10/487,010 US20040253464A1 (en) | 2002-07-30 | 2002-07-30 | Surface protection film for painted surfaces with an adhesive based on hydrogenated block copolymers |
JP2003523554A JP2005501164A (ja) | 2001-08-23 | 2002-07-30 | 水素化ブロックコポリマーをベースとする接着剤による塗装表面用の表面保護フィルム |
DE50210321T DE50210321D1 (de) | 2001-08-23 | 2002-07-30 | Oberflächenschutzfolie für lackierte flächen mit einem kleber auf basis von hydrierten blockcopolymeren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10141379A DE10141379A1 (de) | 2001-08-23 | 2001-08-23 | Oberflächenschutzfolie für lackierte Flächen mit einem Kleber auf Basis von hydrierten Blockcopolymeren |
DE10141379.3 | 2001-08-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2003018702A1 true WO2003018702A1 (de) | 2003-03-06 |
Family
ID=7696390
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2002/008438 WO2003018702A1 (de) | 2001-08-23 | 2002-07-30 | Oberflächenschutzfolie für lackierte flächen mit einem kleber auf basis von hydrierten blockcopolymeren |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1425359B1 (de) |
JP (1) | JP2005501164A (de) |
DE (2) | DE10141379A1 (de) |
ES (1) | ES2287307T3 (de) |
WO (1) | WO2003018702A1 (de) |
Cited By (10)
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EP1589084A1 (de) * | 2004-03-29 | 2005-10-26 | Nitto Denko Corporation | Druckempfindliches Klebeband zur Entfernung von Fluoreszenzstoffen |
WO2007060100A1 (de) * | 2005-11-22 | 2007-05-31 | Tesa Ag | Verwendung eines selbstklebenden schutzfilms |
WO2008017639A1 (de) * | 2006-08-10 | 2008-02-14 | Tesa Ag | Selbstklebemasse aus hydrierten blockcopolymeren und daraus hergestellte schutzfolie für glatte oberflächen |
EP2687569A1 (de) * | 2012-07-18 | 2014-01-22 | Nitto Denko Corporation | Farbschichtschutzfolie |
EP2789663A1 (de) * | 2013-04-09 | 2014-10-15 | Mondi Gronau GmbH | Schutzfolie für glatte Oberflächen, insbesondere Kunststoffoberflächen |
JP2016035039A (ja) * | 2014-08-01 | 2016-03-17 | 旭化成ケミカルズ株式会社 | 粘接着組成物 |
EP3020773A1 (de) * | 2014-11-14 | 2016-05-18 | 3M Innovative Properties Company | Druckempfindlicher Klebestoff auf Gummibasis |
US10167357B2 (en) | 2014-12-31 | 2019-01-01 | 3M Innovative Properties Company | Multi-base material adaptivity pulling removal type binder product, binder composition and assembly |
US10294396B2 (en) | 2014-11-14 | 2019-05-21 | 3M Innovative Properties Company | Post-curable rubber-based pressure-sensitive adhesive |
US11267220B2 (en) | 2012-11-23 | 2022-03-08 | 3M Innovative Properties Company | Multilayer pressure-sensitive adhesive assembly |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10141378A1 (de) * | 2001-08-23 | 2003-04-30 | Tesa Ag | Oberflächenschutzfolie für lackierte Flächen mit einem Kleber auf Basis von hydrierten Blockcopolymeren |
DE102006037627A1 (de) * | 2006-08-10 | 2008-02-14 | Tesa Ag | Selbstklebemasse aus hydrierten Blockcopolymeren und daraus hergestellte Schutzfolie für glatte und raue Oberflächen |
EP2177354B1 (de) | 2008-05-05 | 2012-08-08 | A. Schulman, Inc. | Geschichtete Stützstruktur |
KR20110020862A (ko) * | 2008-06-02 | 2011-03-03 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 접착성 캡슐화 조성물 및 그것을 사용하여 제조한 전자 소자 |
CN104718263B (zh) * | 2012-10-29 | 2017-11-10 | 琳得科株式会社 | 粘合剂组合物及粘合片 |
EP2832779B1 (de) * | 2013-08-01 | 2018-06-06 | 3M Innovative Properties Company | Druckempfindlicher Haftschaum |
KR20150098296A (ko) * | 2014-02-20 | 2015-08-28 | (주)엘지하우시스 | 고무계 점착제 조성물 및 이를 이용한 자동차용 고무계 점착테이프 |
KR101872162B1 (ko) * | 2017-09-15 | 2018-06-27 | 주식회사 엘지화학 | 고무계 점착제 조성물 및 이를 이용한 자동차용 고무계 점착테이프 |
JPWO2021065662A1 (de) * | 2019-10-01 | 2021-04-08 |
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- 2002-07-30 EP EP02762412A patent/EP1425359B1/de not_active Expired - Fee Related
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US5204390A (en) * | 1989-09-08 | 1993-04-20 | H.B. Fuller Company | Hot melt adhesive resistant to ultraviolet light-induced degradation and to plasticizer migration |
EP0479311A2 (de) * | 1990-10-05 | 1992-04-08 | Nippon Zeon Co., Ltd. | Klebrigmachende Zusammensetzung |
EP0519278A2 (de) * | 1991-06-19 | 1992-12-23 | Nitto Denko Corporation | Schutzfolie für Kraftfahrzeuganstrichfilm |
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EP1589084A1 (de) * | 2004-03-29 | 2005-10-26 | Nitto Denko Corporation | Druckempfindliches Klebeband zur Entfernung von Fluoreszenzstoffen |
WO2007060100A1 (de) * | 2005-11-22 | 2007-05-31 | Tesa Ag | Verwendung eines selbstklebenden schutzfilms |
WO2008017639A1 (de) * | 2006-08-10 | 2008-02-14 | Tesa Ag | Selbstklebemasse aus hydrierten blockcopolymeren und daraus hergestellte schutzfolie für glatte oberflächen |
US9902876B2 (en) | 2012-07-18 | 2018-02-27 | Nitto Denko Corporation | Paint film protection sheet |
EP2687569A1 (de) * | 2012-07-18 | 2014-01-22 | Nitto Denko Corporation | Farbschichtschutzfolie |
US11267220B2 (en) | 2012-11-23 | 2022-03-08 | 3M Innovative Properties Company | Multilayer pressure-sensitive adhesive assembly |
EP2789663A1 (de) * | 2013-04-09 | 2014-10-15 | Mondi Gronau GmbH | Schutzfolie für glatte Oberflächen, insbesondere Kunststoffoberflächen |
JP2016035039A (ja) * | 2014-08-01 | 2016-03-17 | 旭化成ケミカルズ株式会社 | 粘接着組成物 |
EP3020773A1 (de) * | 2014-11-14 | 2016-05-18 | 3M Innovative Properties Company | Druckempfindlicher Klebestoff auf Gummibasis |
WO2016077132A1 (en) * | 2014-11-14 | 2016-05-19 | 3M Innovative Properties Company | Rubber-based pressure-sensitive adhesive |
CN107109171A (zh) * | 2014-11-14 | 2017-08-29 | 3M创新有限公司 | 橡胶类压敏粘合剂 |
US10294396B2 (en) | 2014-11-14 | 2019-05-21 | 3M Innovative Properties Company | Post-curable rubber-based pressure-sensitive adhesive |
US10167357B2 (en) | 2014-12-31 | 2019-01-01 | 3M Innovative Properties Company | Multi-base material adaptivity pulling removal type binder product, binder composition and assembly |
US10647801B2 (en) | 2014-12-31 | 2020-05-12 | 3M Innovative Properties Company | Multi-base material adaptivity pulling removal type binder product, binder composition and assembly |
Also Published As
Publication number | Publication date |
---|---|
EP1425359B1 (de) | 2007-06-13 |
EP1425359A1 (de) | 2004-06-09 |
DE10141379A1 (de) | 2003-04-30 |
JP2005501164A (ja) | 2005-01-13 |
DE50210321D1 (de) | 2007-07-26 |
ES2287307T3 (es) | 2007-12-16 |
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